WordPress 5.1 introduces limited LIKEsupport for meta keys when using WP_Meta_Query. The new compare_key parameter (meta_compare_key as a top-level WP_Query query arg) accepts a value of LIKE in addition to the default =. See #42409 and [42768]. Here’s an example of how the new parameter is used: This will generate a query of the form … Continue reading LIKE support for meta keys in 5.1